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40 lines
669 B
C
40 lines
669 B
C
// SPDX-License-Identifier: MPL-2.0
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#include <sys/mman.h>
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#include <sys/fcntl.h>
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#include <unistd.h>
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#include "../test.h"
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#define FILE_NAME "/tmp/mmap_readahead.txt"
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#define PAGE_SIZE 4096
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#define NR_PAGES 16
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static char *addr;
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FN_SETUP(mmap_readahead)
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{
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int fd;
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fd = CHECK(open(FILE_NAME, O_RDWR | O_CREAT));
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CHECK(unlink(FILE_NAME));
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CHECK(ftruncate(fd, PAGE_SIZE * NR_PAGES));
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addr = CHECK_WITH(mmap(NULL, PAGE_SIZE * NR_PAGES,
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PROT_READ | PROT_WRITE, MAP_SHARED, fd, 0),
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_ret != MAP_FAILED);
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}
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END_SETUP()
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FN_TEST(mmap_readahead)
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{
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int i;
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for (i = 0; i < NR_PAGES; ++i) {
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TEST_RES(addr[i * PAGE_SIZE], _ret == 0);
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}
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}
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END_TEST()
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